61429561 has 8 divisors (see below), whose sum is σ = 62663040. Its totient is φ = 60202608.

The previous prime is 61429559. The next prime is 61429579. The reversal of 61429561 is 16592416.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61429561 - 2¹ = 61429559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61429541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20235 + ... + 23071.

It is an arithmetic number, because the mean of its divisors is an integer number (7832880).

Almost surely, 2^61429561 is an apocalyptic number.

It is an amenable number.

61429561 is a deficient number, since it is larger than the sum of its proper divisors (1233479).

61429561 is a wasteful number, since it uses less digits than its factorization.

61429561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3263.

The product of its digits is 12960, while the sum is 34.

The square root of 61429561 is about 7837.7012573841. The cubic root of 61429561 is about 394.5715827210.

The spelling of 61429561 in words is "sixty-one million, four hundred twenty-nine thousand, five hundred sixty-one".